Barratt 1992.

Methods	Randomised Controlled Trial
Participants	42 participants age range 3;01‐3;07 27 males and 12 females were present at end SES data not provided, but children could be included on basis of delay due to deprivation
Interventions	Clinician administered interactive language therapy focusing on expressive and receptive skills. Provided over six months either weekly (40 mins) or as part of two intensive therapy blocks (40 mins 4 days a week for 3 weeks in each 3 month block). 21 participants received weekly therapy and 18 received intensive therapy.
Outcomes	Reynell Expressive and Receptive scales
Notes	Children had to score less than 1SD below mean on expressive and/or receptive subtests
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	B ‐ Unclear